Reticolo and Meent

[kong658]

Hello,

I'm encountering an issue with Meent when simulating a 2D metallic grating. For a specific example with:

When expanding to 20 orders in both x and y directions, Reticolo (MATLAB) completes the calculation in just 3 seconds on my computer. However, Meent takes nearly 40 seconds. More critically, while Meent handles the convergence of metallic structures well, the absolute calculation results are not accurate when compared to Reticolo and other tools like FDTD, which are known to be accurate.

This leads to my confusion: why is there such a significant discrepancy in speed and accuracy on my machine, given that benchmark tests for Meent show no major differences when compared to Reticolo?

Additionally, I'm curious if the vectorial modeling calculations and transfer matrix calculations in the code have been deprecated or handled differently in Meent.

I have a strong need for a Python RCWA library, and I find Meent to be an excellent project. I'm hoping you can help me understand and resolve these issues.